Scriber setting height gage

ABSTRACT

A device for checking dimensions of machine parts or the like, consisting of a dual inter-dependent keyed linear structures having inter-connected operating elements to maintain the unique multiple gage stack feature of my U.S. Pat. No. 3,180,029 with the use of much smaller gage blocks, to accommodate an extra large micrometer thimble graduated about its circumference to one hundred thousandths in ten thousandths of an inch, permitting when the micrometer screw thread is 10 threads to an inch to obtain a reading within one turn of the thimble when the one hundred thousandths gage blocks are utilized and within ten turns when the one inch gage blocks are used. A scriber setting mechanism is incorporated to allow the setting of a scriber, that is secured in a standard height gage, to a required height by utilizing the spring loaded scriber setting arms instead of the spring loaded dial indicator point that would be held in another standard height gage. Although the gage stack and scriber setting unit is extended the micrometer thimble remains within easy reach for comfortable manipulation.

United States Patent [1 1 Perwas Aug. 28, 1973 1 SCRIBER SETTING HEIGHTGAGE [76] Inventor: Ludwig F. Perwas, Mountainview Avenue, Orangeburg,N.Y. 10962 [22] Filed: Sept. 12, 1968 [21] Appl. No.: 759,340

Related 1.1.8. Application Data {63] Continuation-impart of Ser, No.501,220, Oct. 22,

1965, abandoned.

[52] US. Cl. 33/170 [51] Int. Cl. G01b 5/00 [58] Field of Search 33/169,170, 171

[56] References Cited UNITED STATES PATENTS 2,463,151 1/1949 Campbell...33/170 2,819,530 1/1958 Webber 33/169 R 3,180,029 4/1965 Perwas 33/1703,184,856 5/1965 Theverkauf et al.. 33/169 R 3,106,022 10/1963 Milan33/170 3,115,708 12/1963 Roy 33/170 3,176,406 4/1965 Williams.... 33/1703,258,845 7/1966 Wiegel 33/170 Primary Examiner-Harry N. Haroian STRACTA device for checking dimensions of machine parts or the like,consisting of a dual inter-dependent keyed linear structures havinginter-connected operating elements to maintain the unique multiple gagestack feature of my US. Pat. No. 3,180,029 with the use of much smallergage biocks, to accommodate an extra large micrometer thimble graduatedabout its circumference to one hundred thousandths in ten thousandths ofan inch, permitting when the micrometer screw thread is 10 threads to aninch to obtain a reading within one turn of the thimble when the onehundred thousandths gage blocks are utilized and within ten turns whenthe one inch gage blocks are used. A scriber setting mechanism isincorporated to allow the setting of a scriber, that is secured in astandard height gage, to a required height by utilizing the springloaded scriber setting arms instead of the spring loaded dial indicatorpoint that would be held in another standard height gage. Although thegage stack and scriber setting unit is extended the micrometer thimbleremains within easy reach for comfortable manipulation.

3 Claims, 43 Drawing Figures Patented Aug. 28, 1973 14 Sheet 1 FIG! I42I33 58 I32 MI LUDWIG E PERWAS Patented Aug. 28, 1973 14 Sheets-Sheet 2FIG. 5

FIG. 6

INVENTOR.

LUDWIG E PERWAS Patented Aug. 28, 1973 14 Sheets-Sheet 3 FIG. 8

INVENTOR. LUDWIG F PERWAS Patented Aug. 28, 1973 3,754,333

14 Sheets-Sheet 6 FIG]? 310 .1 L "I" O FIG. l8

FIG. 24

INVENTOR. LUDWlG F PERWAS Patented Aug. 28, 1973 14 Sheets-Sheet FIG. 25

@5522. E 25p Q 3 5555: EH5525222335:g munmuuu INVENTOR. LUDWIG F PERWAS-Patented Aug. 28, 1973 14 Sheets-Sheet 8 FIG. 27

FIG. 29

FIG. 28

lllll vll INVENTOR. LUDWIG F PERWAS Patented Aug. 28, 1973 3,754,333

14 Sheets-Sheet 9 Patented Aug. 28, 1973 14 Sheets-Sheet 1 O INVENTOR.LUDWlG F PERWAS FIG. 32

Patented Aug. 28, 1973 14 Sheets-Sheet 1 l INVENTOR. LUDWIG F PERWASPaknted Aug. 28, 1973 14 Sheets-Sheet 12 R 08 mm R vww s mm W D U LPatented Aug. 28, 1973 14 Sheets-Sheet l 4 FIG. 40

FIG. 42 448%6 FIG. 4|

FIG. 43

INVENTOR. LUDWiG F PERWAS rlllll SCRIBER SETTING HEIGHT GAGE Thisinvention is an improvement over the height gage of my U.S. Pat, No.3,180,029 issued Apr. 27, 1965 and a continuation in part application ofmy patent application Ser. No. 501,220 filed Oct. 22, 1965 nowabandoned.

An important object of this invention is to eliminate the manipulatingextension parts and simplify the securing means of the multiple gagestack of U.S. Pat. No. 3,180,029 thereby resulting in a more economicaldevice.

Another important object of this invention is to provide a constructionmore suitable to the operation of a scriber setting means.

A further important object of this invention is to make it easier toreach the manipulating positions of the rotatable micrometer thimblewhen the gage block stack or column is stacked several multiple stackshigh.

Still another object of this invention is instead of utilizing 40threads to an inch for the micrometer threads, this inter-connectedcolumn construction and combination of parts permit ten threads to theinch to be used, while allowing the diameter or width of theunder-surface or over-surface gage blocks to be much smaller than thoseengaging the micrometer lifting mechanism in my U.S. Pat. No. 3,180,029and still retain the gage stack multiple gage block extension feature.

Still a further important object of this inventive extensionconstruction is to provide a suitable structure for a micrometer thimblewith its circumference graduated to one hundred thousandths (.001) byten thousandths of an inch (0.0001 thereby permitting a much largergraduated thimble for one or 10 turns readings of a 10 pitch thread.

With the above and other objects and advantages in view, the inventionconsist of the novel, new and unique construction more fully hereinafterdescribed, claimed and illustrated in the accompanying drawings.

FIG. 1 is a from partial plan and sectional view of one of the devicesshown in my pending patent application Ser. No. 501,220, filed Oct. 22,1965.

FIG. 2 is a partial cross-sectional view of a unique alignmentconstruction of a vee-slide lift mechanism of the micrometer column ofFIG. 1.

FIG. 3 is a cross-sectional view of the device taken along the line 3-3of FIG. 8.

FIG. 4 is a partial sectional view of the most upper gage block of thebasic gage column with a multiple gage block stack mounted on the uppergage surface of said gage column and firmly secured in place by a uniquedual bolt construction.

FIG. 5 is an enlarged partial sectional view of the lift bar meanswithin the micrometer linear structure 45 and the micrometer slide tube48.

FIG. 6 is an isometric view of the gage block depictee in FIGS. 1, 3, 7,8 and 31.

FIG. 7 is a cross-sectional view of the device taken along the line 7-7of FIG. 1.

FIG. 8 is top plan view of the device, illustrating the cross-sectionalcompactness.

FIG. 9 is a lengthwise sectional view at 90 from the position shown inFIGS. 1 and 32 thereby omitting the scriber setting arms for a clearerillustration of the spring actuating mechanism and securing means.

FIG. 10 is a bottom view of the scriber setting means.

FIG. 11 is a similar view of FIG. 9 except that it also illustratesspring adjusting means.

FIG. 12 is a top view of FIG. 13.

FIG. 13 is an elongated view of a basic scale means and a multiplegraduated extension scale.

FIG. 14 is an enlarged sectional view of the scriber setting slideelement 144 illustrating several important features such as the detentmechanism with parts 146-147-156-etc., the knurl Iockscrew 121, thepressure gib with parts A-B-C-D-E-F-G-H-I and the stop plate 163.

FIG. 15 is an exploded plan and sectional view of the detent mechanismparts.

FIG. 16 is a front partial sectional view of a modification of thedevice shown in FIG. 1 illustrating a stack of unique gage blockssuitable for a one hundred thousandths thickness.

FIG. 17 is a cross-sectional view taken along the line 17-17 of FIG. 16.

FIG. 18 is a top plan view of the gage block shown in FIG. 16 gage stackhaving a special construction for securing the said gage stack firmly inposition,

FIG. 19 is a lateral view of FIG. 18.

FIG. 20 is a top plan view of an auxiliary drive element which isutilized when the device in FIG. 16 is provided with motorized means.

FIG. 21 is a view as shown in FIG. 16 or a front view of FIG. 20.

FIG. 22 is an upper partial view of the micrometer lift element less theauxiliary drive element.

FIG. 23 is a cross-sectional view taken along the line 23-23 of FIG. 16.

FIG. 24 depicts a top and front view of an adjusting screw element shownin FIG. 16.

FIG. 25 is a front view of a modification of the device shown in FIG. 16showing the slide element of said FIG. 16 to be stationary and thestationary column to be the sliding element to which is attached thebasic gage stack and micrometer lift bars.

FIG. 26 is a view of a standard T-slot holding means.

FIG. 27 is a view taken along the line 27-27 of FIG. 25.

FIG. 28 is an elongated view of the micrometer screw shown in FIGS. 25,31 and 33.

FIG. 29 is a top view of the lower lift bar shown in FIG. 25.

FIG. 30 is a front view of FIG. 29.

FIG. 31 is a front view of a modification of the device shown in FIG. 16illustrating the motor means, motor actuating cam means, clutch meansand special micrometer screw securing and adjusting means.

FIG. 32 is a modification of the other mentioned devices consisting ofthe new one hundred thousandths gage blocks, single lift bar means,scriber setting means, telescoping scale means and adjustable micrometercolumn for choosing a suitable operating position.

FIG. 33 is a a sectional view taken along the line 33-33 of FIG. 32.

FIG. 34 is a cross-sectional view taken along the line 34-34 of FIG. 33.

FIG. 35 is a top view of the gage stack upper securing means.

FIG. 36 is a partial cross-sectional view taken along the line 36-36 ofFIG. 33.

FIG. 37 is a partial cross-sectional view taken along the line 37-37 ofFIG. 33.

FIG. 38 is a top plan view of the multiple gage stack shown in FIG. 40.

FIG. 39 is a top plan view of the special upper securing gage block 441and angle retainer plate 444 of FIG. 33.

FIG. 40 is a multiple gage stack illustrating the new one hundredthousandth gage blocks.

FIG. 41 is a lateral view of FIG. 39.

FIG. 42 is a backview of the angle retainer plate.

FIG. 43 is a bottom view of the micrometer column illustrating the camactuating means structure.

Referring to FIG. 1 through the device consist of a stationary base 44having a micrometer column 45, somewhat similar to the device depictedin the previous mentioned US. Pat. No. 3,180,029, less the gage rings orblocks, mounted by a plurality of screws 46 passing through holes in theadapter 47 to engage threaded bores in said base 44 which also hasintegrally attached to a micrometer slide tube 48 a lift bar 49.

The opposing unattached side of the lift bar 49 passes through a slot 50that is approximately midway between the ends of an elongated supporttube 51 and is secured through the assembly slot 52 by dowel pins 53 andthe socket screws 54 to the relative precision face 55 of the elongatedreduced square center-portion 56 of the support shaft 57 which hasprecision diameters at its extreme ends 57 that engage solid statebearings 58 that are press fitted in the ends of a rigid support column51 that is integrally attached to the said base 44.

A basic gage stack lift bar 60 having an elongated narrow lateral face61 is aligned and secured through the assembly slot 62 by dowel pins 53and socket screws 54 to a relative precision face 55 which is at 90 tothe precision face 55 and integrally attached to the said gage lift bar60 is a projected portion 63 that is integrally attached to a lift gageblock 64 having a center through bore 65 for assembly purposes.

A partial gage block 66A with a non-projected gage side 66 and anelongated shaft 67 upon which is stacked individual similarcross-sectional gage blocks 68 before said shaft 67 engages the saidbore 65 of the lift gage block 64 on which is further stacked asufficient number of gage blocks 68 to complete the basic gage column68A, The upper threaded end 69 of the said shaft 67 passes through alockwasher 70, a flat washer 71 having their outside diameters 72 and 73set in a counter bore 74 of the upper face 75 of the uppermost gageblock 76. A threaded cylindrical multiple stacking alignment nut 77having precision alignment diameter 78 and non-parallel surface 79engaging said threaded end 69 of the shaft 67 thereby securing the basicgage block stack firmly together forming a basic gage block column 68A.In FIG. 31 below the gage column 68A in the wear plate 44A is a counterbore 81 receiving a flange 82 that is secured by a plurality of screws83 and having an integral auxiliary alignment shaft 84 passing through aclearence bore 85 and engaging an elongated center precision bore in theshaft The top of the micrometer device in FIG. 1 has a graduated thimble86 held adjustably in place by the shoulder 87 of the reduced diameter88 of the manipulating knob 89 and the upper face 90 of flange 92 of themicrometer screw 93 is secured in place by the set screw 94 bearingagainst the said diameter 88 and the manipulating knob 89 is providedwith a clearence bore 95 to allow for the adjustment of the sub-assemblyof the micrometer screw 93 by a retaining assembly consisting of a setscrew 96, a split lockwasher 97 that locks in position the spacing setscrew 98 which holds the thrust ball bearings 99 and flange 100 of liftshaft 101 rotatably in place.

The vee-lift mechanism shown in FIGS. 1,2 and 7 consist of a vee-wayslot 102A in the support tube 102 engaging a vee-key 104 that engages alift bar 105 which is secured to the reduced diameter 106 of the liftshaft 101 by a washer 107, a lockwasher 108 and nut 109 engaging'afurther reduced diameter 110 of the said lift shaft 101. The ends 111 ofthe lift bar 105 engages a bore 1 12 of an adjustment screw 1 13 thatbears against the vee-key 104 maintaining it 104 with a sliding fit inthe said vee-way slot 102A. A lockwasher 114 and set screw 115 securesthe adjustment screw 113 firmly in place.

Referring to the micrometer mechanism the micrometer screw 93engages'the inside threads 116 of the double threaded wall 117 of amicrometer housing 118 and within the top of the micrometer screw 93 isthe previous mentioned rotatable ball bearing loaded lift rod 101 andadjusting means. The micrometer housing 118 has an outside wall 119 withflange 120 against which one end of a graduated barrel 121 seats. Thebarrel 121 is secured in place by a threaded knurl lock ring 122engaging a corresponding threaded end of the housing 118 outsidediameter of the wall 119. The lower end of the housing 118 has a hub 123with a precision bore 124 that engages a corresponding precisiondiameter 125 of the support tube 102 upper end and is secured in placeby the set screw 126. The outside tapered threads 127 of the doublethreaded wall 117 engages corresponding tapered threads of an adjustingbushing 128 which when further engaged to remove the play between theoutside micrometer screw thread and the inside thread of the doublethreaded wall 117 depresses the play area enclosed by the bushing 128and defined by the slots 129 in the said double threaded wall 117.

The threaded knurl ring 130 engages the threaded lower end of thesupport tube 102 and by rotating it 130 clockwise raises the micrometercolumns slide tube 48, slide element 57 and basic gage column 68A orwhen it 130 is rotated counterclockwise the gage column is loweredpermitting the gage blocks to be properly set to a unit measurementabove the working surface upon which the device is being utilized byadjusting the micrometer thimble 86 or graduated barrel 121.

An integral shaft portion 131 of the partial gage block 66a engages acorresponding alignment bore 132 of the bushing 133 while on an integralextended portion 134 of the said block 660 is mounted a scriber settingmeans 135 that engages the full 1 inch measurement grooves 136 of thecolumn 137. A shaft 138 engages a corresponding bore 132 of the bushing133 which is held in place by the socket screws 139 threaded endspassing through adjustment slots 140 and engaging threaded bores 141 inthe flange 142 of the bushing 133. The upper end of the shaft 138engages a corresponding bore in the unit measurement column 137.

Two opposing off-set detent mechanism consisting of a housing 151 orcontaining a detent 147 or 148 having a radius 147A or 148A at one endfollowed by a short diametrical portion 1478 or 14813 engaging anintegral flange portion 147C or 148C which in turn is integrallyattached to a rod-like portion 147D or 148D that engages a compressionspring 146 enclosed and held in place by the rigid washer 147E or 148Eand lockring 147F or 1481 A thread 1476 engages a threaded bore 152A ofa knurl knob 152 for the manual operation of the detents.

A housing F that is an integral part of the slide element 144 contains asoft metal pad B with a compression spring A applying pressure againstsaid pad B and held in place by a spacer G and a set screw C engaging athreaded bore H in the outer end 1 of the said housing F with alockwasher D and knurl nut E for locking said set screw C firmly inplace. The aforementioned structure prevents the slide element 144 fromdropping to the bottom of the shaft 137 which may result in damage tothe scriber setting arms or gage block projected gage surfaces. If bothdetents 147 and 148 are dis-engaged and the user loses their grip on theslide element 144 unit, the scriber setting mechanism would drop towardsthe bottom with a high chance of the scriber setting arms crashing intothe gage block measuring surfacesv In FIG. 14 an inside thread of theintegral base 176A of the slide element 144 engages a threaded diameterof a lockscrew 176 having a reduced diameter 175 that secures orreleases the said slide element 144 in relation to the utilizing of theunit grooved shaft 137.

A precision bore 143 of a cylindrical slide element 144 engages thecorresponding outside diameter 145 of the unit measurement column 137 sothat one of the two spring 146 loaded detents 147 or 148 may engage afull inch unit ring groove 136 which will apply tension to the projectedover-surface arm 160 when engaging an under-surface projected measuringsurface 150 of a gage block 68 by engaging the detent enclosed in thehousing 151 by releasing the the knurl knob 152 allowing its 152 taperedsides 153 to engage the corresponding tapered groove 154 of the housing151, whereas the detent in housing 155 is in an open position as it waspulled all the way out and rotated ninety degrees and then releasedallowing the flat bottom surface 156 to seat upon the outer face 157 ofthe housing 155. This arrangement permits only one detent at a time tobe utilized. The over-surface arm 149 is engaged by first assuring thedisengagement of the relative undersurface detent 147 and engaging therelative oversurface detent 148 and then rotating the housing 158 in acounterclockwise direction until the engaging taper 159 of the scriberarm 160 encounters the undersurface 150 of the gage block 68 gentlyurging the corresponding surfaces 149 and 150 to engage. The detentscenters according to the dial indicator 161 are spaced 0.007 apart sothat if either one of the detents are engaged the indicator will read0.007 thereby allowing a free movement of plus or minus 0.007 from thegage surfaces of the blocks 68 for the setting of the projectedunder-surface and projected over-surface of the floating housing 158which contains dual opposing springs 162 bearing against both faces ofthe circular stop plate 163 that is secured to the cylindrical slide 144by the set screw 164.

A dial indicator 161 with a tension range of 0.100 and a balanced dialface 165 with a range of plus or minus 0.015 is secured to thecylindrical slide 144 after the diameter 166 engages a correspondingbore in the extended slide member 167 by the set screw 168 after it 161is adjusted by the knurl nut 169 mounted in a slot 170 formed by the twoupper extended member 171 and engaging the threaded shaft 172 as theball point 173 is adjusted to bear against the upper surface 174 of thefloating housing 158.

To use the scriber setting mechanism the micrometer scales are setaccording to the height of the line to be scribed is above the surfaceplate and the projected under-surface 150 of the gage block 68 and theoversurface 149 of the scriber setting arm 149 which moves along withthe gage column and is relatively set to the unit inch of the said gagecolumn measuring surfaces is selected, as in FIG. 1 the over-surface 149engages the under-surface .150 when the relative detent engages the theappropriate unit inch groove 136 of the unit measurement column uponwhich the cylindrical slide 144 is secured by the reduced diameter 175of the knurl lockscrew 176 and the indicator needle 177 position ischecked to see if it is on the dial marking 0.007. The projection arm160 is gently released to assure maintaining the precision setting and ascriber of a standard height gage is gently brought in contact with theoversurface 149 and adjusted until the reading is similar (0.007) towhat the reading was when the arm oversurface 149 was just before it wasreleased (0.007). The height gage lockscrew is engaged and the heightgage is carefully slid over to scribe a line on the workpiece.

In FIG. 11 is a modification of the scriber setting mechanismillustrating a dual adjustment screw 178 for adjusting the springpressure on either side of the stop plate 163 to regulate the centeringof the detents 147 and 148 in reference to unit gage surfaces of thegage column. A knurl flanged end 179 is gripped for increasing ordecreasing the spring pressure and a split lockwasher 180 and threadedknurl ring 181 engaging the outside threads 182 of said adjustment screw178 securing it 178 firmly in place by applying pressure to the upperface 183 of the threaded hub 184 of the floating housing 158, whichconsist of two halves 185 and 186 that are firmly secured together bythe flat head screws 187.

Attached to the stationary base 44 in the same manner as the adapter 47is an adapter 188 having a precision bore 189 engaging a precisiondiameter 190 of a basic scale rod 191 that is adjustably secured to saidadapter 188 by a set screw 192. The upper end has a bore 193 and anupper precision face 194 that is flat and parallel to the bottom surface195 of the device and the thread of the said bore 193 is square to theprecision face 194.

An extension scale rod 197 having a plurality of individual verticalgraduated alignment scale lines in conjunction with varying graduatedconsecutive fractional scale ranges 198, 199, 200 and 201 is securelymounted on the upper precision face 194 by its bore 202 engaging anelongated diameter of an extension scale rod support 203 which has areduced threaded diameter engaging the threaded bore 193, and after thedesired scale range is aligned a threaded end 205 of a knurl screwengaging a split lockwasher 196 and a threaded bore 206 in the upper endof the scale rod support 203.

The first number of each of the four scale ranges designates theuppermost full inch height of the precision surface upon which thegraduated scale rod sets, while the last number is one less that theactual height the gage column has been extended. The basic gagenumerical graduation of the scale rod full inches is also one less thanthe actual basic gage column height. The multiple gage extension stacksalthough shown here to be 6 inches in length may vary according to thelifting power of the device.

The first stack range numbered 12 to 18 inches vertically positioned onthe plurality extension range rod 197 is represented by the numeral 198,the second stack range of 19 to 24 by the numeral 199, the third stackrange of 25 to 31 by the numeral 200 and the fourth stack range of 32 to38 by the numeral 201.

In FIG. 16 is illustrated a modification of the device shown in FIGS. 1,3, 7 and 8 consisting of a micrometer column 207 having a graduatedmicrometer barrel 208 secured to an upper diameter 209 of the adapter210 by the set screw 21 l, a lower diameter 212 engages the bore 213 inthe upper end of the said column 207. A micrometer thimble 208A havingits circumference graduated to one hundred thousandths of an inch(0.001) by ten thousandths (0.0001) and secured to the outside diameter214 by a set screw 211 and within the top slots 215 for receiving theintegral keys 216 of the plug 217 which is held in place by the lockring218 and within the center a square bore 219 for receiving a square shaftof a clutch when this device'is used with a motor that would be attachedto the face 220 and held in place by the screw holes 221. The upper boreof the micrometer lift shaft 222 has below the plug 217 a threadedhollow adjustment bushing 224 engaging the inside threads 223, appliespressure to the adjustment bushing 224A which in turn by means of its224 inside tapered diameter engaging the outside tapered diameter 225that is an integral part of the micrometer lift shaft 222 therebyadjusting the micrometer screw thread play in conjunction with the slots226 in the tapered diameter 225. The micrometer screw adjustment is thesame at the lower end of the micrometer lift shaft except that thetapered diameters are threaded eliminating the need of the saidadjustment bushing 224 at this end. A micrometer screw 227 has a keyed228 nonthreaded diameter portion 227A engaging corresponding a bore inthe hub 229 of the lower end of the micrometer column 207 and secured inplace by the split washer 230 and threaded ring nut 231. The elongatedmicrometer screw thread 227 engages the inside elongated thread of themicrometer lift shaft 222 which engages a lift bar 232 by a taperedroller bearing 233 having the face 234 at the larger end bear againstthe shoulder of the micrometer lift shaft 222 and engage a bearing bore235 in the lift bar and at the lower opposing side another taperedroller bearing 233 engaging a bearing bore 235 and an adjustmentshouldered bushing 236 engaging a thread 237 of the reduced diameter 238of the lift shaft 222 and applying sufficient pressure against theadjacent face of the inner race of the tapered roller bearing 233 andsaid bushing 236 is secured in place by the set screw 237. The reduceddiameter 239A of the column 207 engages a corresponding bore in anadapter 2398 which is secured to the base 240 by a plurality of screws241 having their threaded ends 242 pass through an adjustment slot 243and engaging threaded bores 244 in the adapter flange 245, and thesocket head screws 246 are freely located in a recess 247 in the bottomof the wear plate 248. A threaded knurl adjusting ring 249 engages theupper threaded end 250 of the adapter 239 and the upper face 251 bearsagainst the surface 252 of the column 207 and when it 249 is rotatedclockwise the column 207 is raised thereby raising the interconnectedlift bar 232, slide element 253 and the basic gage column 254 but whenthe knurl nut 249 is rotated counterclockwise it lowers the micrometercolumn 207 and its interconnected lift bar 232, slide element 253 andbasic gage column 254 with this construction by loosening the graduatedmicrometer barrel 208 or micrometer thimble 208A the gage blocks 255 canbe, if necessary, adjusted to an accurate full inches above the workingsurface upon which the device is being used.

The upper extended end 256 of the lift bar 232 has a bore 257 freelyengaging a reduced diameter 258 of the slide element 253 and abuttingagainst the upper surface 259 of the slide element flange 260 andsecured in place by the spacer 261, split lockwasher 262 and threadedring nut 263. The lower shorter end 264 is secured to a flat surface 265of the square member portion 266 of the slide element 253 by thethreaded ends 267 of the socket screws 268 passing through theadjustment slot and engaging corresponding threaded bores in adjacentportion 266. Adjustment units 269 are secured to the portion 266 by thescrews 270 and a threaded bore through the body 271 engaging a threadedshaft 272 which is secured at both ends by a split lockwasher 273 andnut 274. In FIG. 16 a slot in the slide element 253 stationary column275 with resilient stop pads as shown in FIG. 16 co-acts with theadjustment units 269 to limit the travel distance of the micrometer liftshaft 222, slide element 253 and gage stack 254 to protect said parts222, 253 and 254 against being damaged. An elongated shaft 276 threadedlower end 277 engages a corresponding threaded bore in an adapter 278that is secured to the stationary base 240 by the flat head screws 279and the shaft 276 passing through a corresponding bore 280 within theslide element 253 through a cover plate bore 281 and integrallyconnected to a knurl knob 282 that secures the cover 283 to the column275, in the device of FIG. 33 only.

In FIG. 33 a lift bar 284 having a narrow side 285 secured to a flatface 286 of said square member portion 266 by the dowel pins 287 andflat head screws 288. The opposing narrow side of the lift bar 284 hasan integrally attached L-shaped gage support 289 including a precisionsurface 290 that is flat and parallel to the bottom surface of the wearplate 248. Gage blocks 291 are stacked and aligned on the precisionsurface 290 and secured in place by three bolts 292 with flat head screwtype head 293 and a threaded end 294 engaging a flat head screw type nut295. In the upper end is a threaded bore 296 for receiving the threadedreduced diameter 297 of the multiple gage stack extension bolt 298 thatsecures the extension gage stack 299 to the upper surface 300 of thebasic gage column 301. The head 302 of the extension bolt 434 has athreaded bore 296 for further extending the gage column by adding anextension gage stack 299 to the upper gage surface 303 of the stack 299shown in FIG. 40 illustrating showing that the gage column 301 may becontinously extended. The one hundred thousandths (0.001) gage blocksare made so that when properly assembled a double row of alternatingunder-surface and oversurface gage surfaces are formed to be used asscriber setting gage surfaces and a tab-like double row of gage surfacesare formed for use with a standard height gage and dial indicator. Theone hundred thousandths thick gage blocks allows the obtaining of adimension reading within one turn of the micrometer thimble when a tenpitch thread is used and results in a great saving of time. A gagecolumn alignment rod 304 having a flange 305 freely engaging a bore 306in the insert bushing 307 that is held in place by the lower most gageblock 308.

A scriber setting unit support plate 309 is attached to the bottom ofthe L-shaped gage support 289. In FIG. 16 only the position of thesupport plate 303 is shown and the relative position of the floatinghousing 158. The scriber setting construction is the same with theexception that support plate 309 is detachable, the annular unit grooves136 are spaced 0.001 apart instead of l inch and the thickness of theends of the arms is less than one hundred thousandths (0.001) in orderto fit between the gage blocks.

FIG. 17 shows the basic gage column 301 having on the short side of therectangular gage block a double vertical row of gage surfaces 310 on oneend and on each of the longer sides a double tab-like row of gagesurfaces 311 to an inch which gives the person using this device achoice of keeping the micrometer thimble 208A to the right or to theleft or to the rear or at any suitable angle.

The modification shown in FIG. 25 is basically related to the modelshown in FIG. 1 but is more related to the model shown in FIG. 16 thetapered bearings 233 are located in two lift bars 312 and 313 that arespaced by the hollow spacing rods 314 and secured by the bolts 315passing through lift bar 312, the spacing rods 314, and with its 315threaded end 316 engaging the partially threaded bore of the lift bar313, forming a rigid dual lift bar. A dual adjustment for the micrometerscrew is extended from a micrometer screw support plate 317 which islocated between a lower housing 318 and upper housing 319.

The lower housing 318 is cylindrical in cross-section and has accesswindows 320 to facilitate the securing of the support plate 317 to theupper housing 319 by the socket screws 321 and a center bore 322 for theengaging of clutch means and a bore for receiving a press fitted shaft323 of the support housing 324 which is secured to the base plate 325the same as shown in FIGS. 33 and 34. A slot 326 is provided to enablethe lift bar 312 to extend through the housing 318 so that the bore 327can freely engage the diameter 328 of a dual adjustment sleeve 329 forthe lift bar 312. The lift bar 313 is secured to the exterior slideelement 330 by the threaded diameter 331 freely engaging bore 332 of thelift bar 313 and split lockwasher 333 and nut 435 engaging said threadeddiameter 331 to secure bar 313 firmly in place. The split lockwasher 334and knurl ring nut 335 engaging the threaded diameter 336 secures thelift bar 312 firmly in place. A flat head screw 337 secured in theexterior slide element 330 has a reduced diameter 338 engaging a key way339 in the stationary column 340 for maintaining the slide element 330in position when the position of the micrometer column is changed. Thestationary column 3&0 lower diameter 341 partially engages a bore in ahub 342 of the stationary base plate 340 and is secured in place by thetapered pin 343. A stop pad 344 consisting of a rigid washer 345 havingcemented to one side a resilient washer 346 and cemented to the oppositeside of resilient washer 346 a rigid collar 347 having a set screw 348for securing the stop 3% in a selected position. The lower diameter 341and the upper diameter 343 engage solid state bearings 350 that arepress fitted within the corresponding lower and upper ends of theexterior slide element 330. In the bottom plate 325 of FIG. 25 is anextention to provide for a bore 352 to engage the hub diameter 353 ofthe hub 342 and being that the top plate 354i of the micrometer columnhas an extended portion 355 with a hub 356 engaging the reduced diameter357 of the stationary column 340 the micrometer column position can bechanged without applying any harmful pressure to the lift bars 312 and313. A gage stack alignment ring 358 engages the outside diameter 359and the socket screws 360 secures the extended portion 361 of the aspecial gage block to the platform 362. Slots 363 allow the gage columnto be properly aligned before securing the the extended portion 361firmly in place.

The modification in FIG. 31 consist of micrometer screw bearingadjusting bushing 36d consisting of a threaded bore 365 engaging theupper end of the micrometer screw and a reduced diameter engaging thereduced diameter 366 of the micrometer screw and secured in place by theset screw 367 after the upper face of bushing 364 is brought to bearagainst the lower face of the inner race 239 and the proper play hasbeen set.

A motor 368 is secured to the bottom of the housing I 318 with clutchelement 369 having a square elongated shaft 370 freely engaging acorresponding square bore within the center of the micrometer screw andmating clutch plate 371 secured to the upper end of the motor shaft 372while at the lower shaft end 373 engages a bearing 374 pressed fitted inthe housing 324. The upper end of an actuating rod 375 engages thebottom of the upper clutch plate 369 and the lower spherical end engagesthe surface 376 of the cam block 377 as the block 377 is pushed inwardby gripping the handle 378 and pressing inward the upper clutch element369 is released and due to gravity moves downward, thereby engaging themating clutch plates 369 and 371. Gripping the cam handle 378 andpulling outward causes the lower spherical end 379 of the actuating rod375 to engage an inclined cam surface 380 and rises to the higher camsurface 381 thereby raising and disengaging the clutch plate 369. Abrake 332 is actuated by the freely attached pressure screw 382A.

The modification of FIGS. 32, 33 and other related figures consistmainly of a single lift bar micrometer mechanism, an adjustablemicrometer column, a scriber setting unit with 0.001 spaced annulargrooves 136 to coincide with the new unique 0.001 gage blocks. A singlelift bar 303 having integral alignment hubs 384 engaging alignment rods38 5 with the ends freely engaging the bores 386 and secured in place bythe split washer 337 and nut 338. A tapered roller bearing 390 engaginga bearing bore 389 in the lift bar 383 in a manner that the weight ofthe lift bar and the other elements it 3133 supports bears downward onthe roller bearings 390, inner race 391 and micrometer screw 392 causinga gravity play elimination. The micrometer mechanism is a dual adjustedtype that was previously explained. An elongated square bore through thecenter of the micrometer screw 392 engages a corresponding square boreof an elongated shaft 370 and an integrally attached male clutch member369 is seperated from the female clutch member 371 that is secured tothe upper end of the motor shaft 373 of the motor 368 that is secured tothe bottom of the housing 318 by the spherical end 393 of the actuatingshaft 375 engaging

1. In a height gage, a base having a pair of spaced apart interdependentlinear structures extending vertically therefrom, one of said structuresconsisting of a micrometer mechanism means mounted on a verticallyextending support member, said micrometer means including thimble andscrew means connected thereto forming rotative manipulating means;raising and lowering means operatively connected to said rotativemanipulating means and extending horizontally from said support member;said other linear structure consisting of an elongated verticallyarranged hollow member having internal guide means and a pair ofelongated slots therein communicating with the hollow interior of saidmember, an elongated slide element guided within said hollow member bysaid guide means, said slide element having portions extending throughsaid slots, one of said portions being connected to said raising andlowering means for movement therewith; an extendable longitudinal gaugestack suspended from and secured to the other portion of said slideelement, said gage stack consisting of superimposed gage members withserveral steplike co-planar measuring surfaces, said gage stack, slideelement and raising and lowering means being thus interconnected andcoacting for simultaneous raising and lowering when the thimble of themicrometer means is manipulated clockwise and counterclockwise.
 2. In aheight gage, a base having interdependent stationary dual linearstructures engaging inter-connected co-acting gage lifting elements, oneof said structures consisting of a micrometer mechanism mounted on alongitudnal support member and operatively connected to a raising andlowering means that is secured to a linear slide element engaging theother said linear structure, an extendable longitudnal gage stacksuspended from and secured to said slide element, said gage stackconsisting of superimposed flat gage members with tab-like projectionsforming several step-like co-planar measuring surfaces, said gage stackkeyed in position by the said slide element and connecting raising andlowering means being keyed in place by said dual linear structures rigidattachment to said base, a flexible lengthwise covering enveloping thesaid longitudnal basic gage stack with openings for receiving thecross-sectional shape of said tab-like gage-projections, a group of unitspaced scored lines including adjacent characters to identify saidscored lines in reference to an extendable basic scale graduated inrelated unit measure ment, an extension rod attachable to the top ofsaid basic scale, a hollow tube with several unit scale ranges graduatedupon said hollow tube''s outside diameter, said tube engaging saidextension rod with a consecutive longitudnal range scale graduated linein line with a longitudnal graduated line on the adjacent scale length,a multiple extension gage stack including extension securing means andsaid covering, an adjustable gage stack protective means, a base of aunit spaced annular grooved extendable shaft secured to the bottom endof said gage stack, said shaft parallel to said gage stack, a slidableand rotatable scriber setting mechanism mounted on said shaft consistingof a shaft pressure means, a lockscrew for locking said scribermechanism to said shaft, a selective co-planar detents alignment meansfor engaging said unit spaced annular grooves of said shaft one at atime in relation to said scriber mechanism''s projected co-planar gagesurfaces that selectively engage a gage surface of the relatedalternating longitudnal rows of co-planar gage surfaces of saidlongitudnal gage stack, an auxiliary alignment rod secured to said baseand engaging a corresponding bore in the lower end of said gage stack, aclutch and power driving means mounted directly below and engaging saidraising and lowering means within the said linear structure thatincludes the micrometer mechanism, a cover for enclosing the said duallinear structures that permits the exposure of the micrometer graduatedparts and operation of said gage stack, the said inter-connected andco-acting elements are raised or lowered simultaneously whenmanipulating said micrometer thimble in a counter-clockwise orclock-wise direction.
 3. In a height gage, a base having interdependentstationary dual linear structures engaging inter-connected co-actinggage lifting elements, one of said structures consisting of a micrometermechanism mounted on a longitudnal support member and operativelyconnected to raising and lowering means that is secured to a linearslide element engaging the other said linear structure, an extendablelongitudnal gage stack suspended from and secured to said slide element,said gage stack consisting of superimposed gage members with tab-likeprojections forming several consecutive step-like co-planar measuringsurfaces, said gage stack keyed in position by the said slide elementand connecting raising and lowering means being keyed in place by saiddual linear structures rigid attachment to said base, a flexiblelengthwise covering enveloping the said longitudnal basic gage stackwith openings for receiving the cross-sectional shape of said tab-likegage projections, a group of unit spaced scored lines including adjacentcharacters to identify said scored lines in reference to an extendablebasic scale graduated in related unit measurement, an extension rodattachable to the top of said basic scale, a hollow tube with severalunit scale ranges graduated upon said hollow tube''s outside diameter,said tube engaging said extension rod with a consecutive longitudnalrange scale graduated line in line with a longitudnal graduated line onthe adjacent scale length, a multiple extension gage surface at the topof said gage stack, an adjustable gage stack protective means, a base ofa unit spaced annular grooved extendable shaft secured to the bottom endof said gage stack, said shaft parallel to said gage stack, a slidableand rotatable scriber setting mechanism mounted on said shaft consistingof a shaft pressure means, a lockscrew for locking said scribermechanism to said shaft, a selective co-planar detents alignment meansfor engaging said unit spaced annular grooves of said shaft one at atime in relation to said scriber mechanism''s projected co-planar gagesurfaces that selectively engage a gage surface of the relatedalternating longitudnal rows of co-planar gage surfaces of saidlongitudnal gage stack, an auxiliary alignment rod secured to said baseand engaging a corresponding bore in the lower end of said gage stack,means for mounting a clutch directly below said raising and loweringmeans within the said linear structure that includes the micrometermechanism, a cover for enclosing the said dual linear structures thatpermits the exposure of the micrometer graduated surfaces and operationof said gage stack, the said inter-connected and co-acting elements areraised or lowered simultaneously when manipulating said micrometerthimble in a counter-clockwise or clock-wise direction.